Does a double chin lift really work to make the jawline disappear?

Lately, whenever I take a selfie or someone takes a picture of me, all I can see is my double chin folds, and it’s driving me crazy. My weight is the same, so why is the fat under my chin so assertive? Is this because I’m getting older? Would getting a double chin lift really help?

When I look up reviews for double chin lifts, the opinions are all over the place. Some people say it didn't work, so I really can't make a decision. Honestly, I don't expect my jawline to snap right out of me after just one or two sessions, but at least I want to be able to hear people say, "Oh? Your face looks a bit slimmer!" when I look in the mirror.

Prices vary so much from clinic to clinic that I don't know where to go for a reasonable price... I'm also worried that I might pay for an expensive treatment only to end up with side effects like sunken cheeks. What do you think about double chin lifting? It should be effective, right?